Home / 43,329.64-65,018.49-21,143.20

Finding the Fourth Proportional to 43,329.64, 65,018.49 and 21,143.20

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Solution

The fourth proportional to 43,329.64, 65,018.49 and 21,143.20 is: 31,726.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,329.64 : 65,018.49 = 21,143.20 : x
  2. Step 2: Convert to fraction form
    43,329.64/65,018.49 = 21,143.20/x
  3. Step 3: Cross multiply
    43,329.64x = 65,018.49 × 21,143.20
  4. Step 4: Simplify right side
    43,329.64x = 1,374,698,937.77
  5. Step 5: Solve for x
    x = 1,374,698,937.77/43,329.64
  6. Step 6: Final answer
    x = 31,726.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.